Oven truck



G4. MUELLER.

OVEN TRUCK. APPLICATION FILED' NAUG.23| |920.

G. MUELLEH.

OVEN TRUCK. APPLICATIoN FILED AuG.23, 1920.

Patented May 23,1922,

3 SHEETS-SHEET 2.

(. MUELILEH.

, OVEN TRUCK.

APPucATloN FILED Aus. 23. 1920.

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MUELLEBJ, 01H' SALT LAKE CITY, UTAH.

OVEN TRUCK.

i 9Lii none.

Original application led August 23, 1920, Serial No. 405,362. Divided and this application filed August j 23, 1920. Serial No. 405,354. j

To all who/nt it 'may conce/ru j Be it known that l, Gnonon ltlnnniini. a citizen ot the United States, residing at Salt Lake City` in the county ot Salt Lake and State of Utah, have invented new and useiiul vimprovements in an Oven Truck7 ot which the [following is a specilication.

The invention relates to an oven truck and is a division of an application .filed by nie on the 23rd day of August i920, Serial No. 405.362. t j

The object of the present invention is to provide a simple, practical and comparatively inexpensive oven truck ot strong, and durable construction equipped with rails and adapted to carry a tray for enabling the tray to be readily run into and out of the oven whereby the entire batch for baking maybe quickly placed in the oven at one time and rapidly removed therefrom without material. loss of heat.

A. further object of the invention is to provide an oven truck of this character adapted to be readily guided and removed Yfrom one point or place to another ttor use in connection with one or more ovens and equipped with ymeans for adjusting the rails for arranging the same either at an inclination or a horizontal position and at the proper elevation to couple accurately with the rails of the furnace.

A further object of the invention is to provide adjusting means located centrally of one end of Jche oven truck and at opposite sides of the other end thereof and capable of independent adjustment and also of simultaneous adjustment oit the means at one end of the truck whereby the rails may be quickly positioned with perfect accuracy.

With these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended, it being understood. that various changes in the form1 proportion9 size and minor details of constructioin within the scope ot the appended claims. may be resorted to wit-hout departing` from the spirit of the invention or sacrificing any of the advantages thereof.

ln the accoinjjianying drawings,l in which like numerals of reterencedesignate corresponding parts in the several figures igure l is a side elevation of an oven truck constructed in accordance with this invention aud shown connected to a bakers ovep, the latter being in section.

tlg-ure 2 is an end elevation of the oven truck partly in section.

Figure 3 is a plan view of the same.A

Figure l is an enlarged detail sectional view illustrating the construction for coupling the rails of the oven truckto the oven rails.

Figure fi is a side elevation of the same, the rails being separated.

\ Figure 6 is a detail view illustrating the arrangement of the beveled `gearing for connecting the side adjusting screws.V

Figure 7 is a detail view illustrating the slidable connect-ion between the bevel gearing .and the side adjusting screws.`

Figure 3 is a detail view illustrating` the device for holding the adjusting nuts of the side adjusting screws stationary while the screws .are simultaneously adjusted by the connecting gearing.

ln the accompanying `drawings in which the oven truck l0 is shown connected to a bakers oven. l designates the baking chamber provided at opposite sides with narrow grooves or channels 2 for the reception of rails 3 constructed and arranged as described in the aforesaid. application and adapted to receive the wheels 5 ot' a Wheeled pan carrying tray or carriage 6 of the oven truck 10 to enable the tray or carriage to be readily run into and out of the oven. The rails 3 which are inverted 'lV-shaped are arranged in channeled casings or housings t and the said rails 3 and the channeled casings or housings d are provided at the front of the oven with extensions 7 and 8 which project beyond the oven and which are adapted to have connected to them rails 9 of the oven truck 10. The rails 9 of the oven truck are inverted lshaped and the terminal portions of the Webs are cut away at the top at 1l. to provide recesses to receive upper projecting portions l2 of the extensions 7 of the rails 3'. The extensions 7 are cut away at the base at 13 to receive the projecting'v base portion 111- oi the rails 9. The said ext-ensions 7 are also provided with side plates lo riveted or otherwise secured to the side faces oit the webs ot the extensions 'T and having' outer spaced parallel portions 16 and outer terminal diverging guiding' portions 17 adapted to guide the rails of the oven truck into the narrow spaces between the pa allel portions 16 of' the side plates 15. The parallel. portions 1G and the webs oi. the oven truck rails 9 are provided with reggistering pertorations 18 and 19 adapted to receive suitable fastening means for couplingthe rails ofthe oven truck to be securely fastened to the oven rails. By this construction, the truck is rigidly connected to the oven rails and constitutes practically a portion of the oven in the handling,r oi"- the wheeled tray or carriage and after a tray or carriage has been introduced into an oyen the truck may be transferred to another oven or left in position for the removal oi"- the tray or carriage as desired. It has been found in `practice that a wheeled tray or carriage containing` between 20() and 250 loaves, will require only about one-half ot a minute tor introducing' it into vthe baking chamber and that less time is refpiired tor the removal of the tray or carriage.

rllhe oven is provided with an automatically closing` counter-balanced door 2l) hinged at the top at 21 and provided with a projecting' weighted arm 22 adapted to partly counter-balance the door 2O and enable an easy operation of the same. The wheels of the tray or carriage are preferably ball. bearing but any anti-friction wheels or wheels of any other construction may ot course be employed and the said tray comprises an open receptacle trame composed ot side bars 27 and connecting end bars E28 and having adjustable pan supportingy bars 29 mounted upon the said side bars and cX- tending entirely across the trame oli the tray. The pan supporting; bars Q9 which are preterably .inverted rlt-shaped, are secured in their adjustments by adjusting and locking; strips or members 31 aVangjed horizontally at opposite sides of the wheeled tray oifbnarriage and having` notches or recesses 32 For enthe webs of the pan supporting bars described in a. co-pending application filed on the 23rd day of August 1920a Serial N0. roasts.

The adjusting bars or members are detaoliably secured to the `frame or carriage by Abolts 33 or other suitable vfasteningT means. Any suitable means may ot course be employed for enabling the strips or meni bers 31 to be detachably secured to the side bars of the tray or carriage and the arrangement of the pans may be reversed if desired as the bars 29fcan extend longitudinally as well as transversely of the tray or carriage,

The pans 34 which are spaced apart? are connected in sets by end bari: ii? :ind they are spared apart to permit the oud baril to resi upon the upper edges o` the vertical portions of the rlsliaped supportim,"v burr; 29. 'The pans are hung` l'rom 'the siuiportingr bars r'ind are arranged so that when the tray is run into the tornano. the bottoms ol' tbc pans will just clear the floor ol' the oren. one-quinter to one-halt' ol an inch clearance being suliicient and the arrangingo t thel pans in such close relation with the lloor ot lbo oven will subject the contents ot the pans lo the entire heat ot the oven door with pracl i 'cally the same heating' offert as when the pans are placed directly upon the floor of the oven. The wheels oit the tray or carriage are pref erably flanged as shown to 'torni Agrooves to receive the rails ot the oven trurl; :ind oyen and they may be mounted in any suilablo brackets or supports 3G. No claim is made. .in the present application` to the partiiular construction of the wheeled oven tray or ein'Y ria ge as this forms the subject mattei' of the said application Serial ilo. 405,363.

The pans 3ft may be oiI any desired ronstruction and the supjiortinpj bars f2!) are also adapted to receive biscuit or broad traysl 3. having a wire mesh bottom and adapted -for the baking ot biscuits rolls. or the like. The wirel mesh bottoms will ou able the contents ot the biscuit or broad trays to balie as quickly :is it they were lying' directly upon the bottom or floor of the baking" chamber. The wire mesh biscuit or broad pan or tray ferns the subject mutter of a separate divisional application. .Qorial No. 473,36@ and is constrm-tod as shown and described therein.

The rails 9 ol the oren truck are prol'er ahly'counccted by transiferso angle bars lT and the said rails 9 are provided with pivoted stops ETS jneterably consistingv o'lt approxi-V mately L-shaped plates or members piyoied at their angles at 49 and haring upwardly extending` arms or portions o() tor engaging' the. braigilrel's or other portions` ol' the wheeled tray or carriage to retain the same on the oven truck. The stop plates or pivoted stops t8 also have inwardly extending' arios ."l provided with pertorations .'iQ adapted lo receive pins or bolts 552 which also Cooperate with openings in the truplz 9 l'or :'-ieruringg the pivoted Ystops in the toll line posion shown in the drawings. When thc pins or bolts :iro removed` the pivoi'ed stops is are adapted to be swung downwardly to the dotted line position `tor removing tho wheelied tray or carriage from tho oyen truolr.

The angle bars S7 have spaced parallel depending wings or ianges between which are mounted blocks 53 and 54; provided in their lower faces with sockets 55 for the reception of double and single adjusting screws 56 and 5T respectively mounted on .l of) llO llt

`the truck frame 58 and located respectfully at opposite sides of one end of the same and centrally oi the other end thereof asclearly shown in the drawings. The double adjusting screws 56 which are mounted in suitable brackets 59, are engaged by adjustable nuts 60 having hand wheels 6l for rotating them and suitably mounted on the truck trame. The hand `wheels 61, which are located at the top of the truck traine are adapted for lower portions of the double adjusting screws 56 are provided with keys or feathers 63 which operate in suitable key-ways ot horizontal bevel pinions 64 whichmesh with vertical bevel `pinions 65 of a transverse shaft 66 journaled in suitable bearings oit the oven truckframe and extending across the same to arrange the gears 65 in proper position to mesh withthe gears 6i ot the double adjusting screws 56.

The adjustable nuts 60 are provided with suitable locking means for holding them against rotary movement after independent adjustment so that they will operate as fixed nuts in the simultaneous adjustment oit the screws 56. The single adjusting screw 57 engages a iixed nut 67 and is mounted in suitable brackets 68 and is provided with a hand wheel 69 for adjusting the said screw 57. By adjusting the screws, the track formed by the rails of the oven truck may tbe arranged either in a horizontal position or at an inclination and also in elevation in the range of the adjustment of the screws.

j The weight upon the screws will bei ample j justing` screws, the central arrangement of the single adjusting screw and the socket connecting the same with the superimposed track, will permit the vertical and lateral `tilting of the track.

at the center of the caster wheel end ofthe trame tor the mounting ot the caster wheel bracket or support.

rl`l1e device for holding the `hand wheel ornut 6() stationary while the side screws 56 are simultaneously adjusted comprises a cog` wheel 75 preferably formed integral with the end wheel 60 but it may be connected with the end wheel in any other desired manner. The cog wheel is provided at intervals with oppositely beveled `recesses 76 adapted to be engaged by inwardly extending teeth 77 ot side levers 78 pivoted at one end at 79 to `a suitable supporting bar or member 80 and connected intermediate of their ends by a coiled spring 8l which urges the ratchet levers 78 inwardly and maintains the same in engagement with the cog or ratchet wheel 75. The -free portions of the levers 78 are preferablysupported upon a transverse member 82 but the levers may be mounted in any other desired manner as may be readily understood. rlhe teeth or engaging portions 77 of the levers are-oppositely beveled to {it the notches of the cog or ratchet wheel and they engage the cog orratchet wheel with a sutiicient gripping action to hold the same stationary during the simultaneous adjustment ot the side screws and at the same time they will permit an independent adjustment or rotary movement ot the end wheels 6l and the side screws when power is applied to the said end wheel 61 with sutlicient torce to rotate the same.

What is claimed is 1,. An oven truck comprising a frame provided at one end with a single centrally arranged adjusting screw and having at the other end spaced double adjusting screws, a fixed nut mounted on the trame and engaging the single adjusting screw, an adjustable nut mounted on the frame and provided with operating means engaging the double adjusting screws, gearing connecting the double adjusting screws, means for rotating the double adjusting screws, and a tray carrying trame mounted upon and supported by the said screws and adapted to be arranged either in a horizontal or inclined position.

2. An oven truck including a frame, a single adjusting screw located at one end of the trame and provided with operating means,v a fixed nut mounted on the Jframe and engaging the single adjusting screw, double adjusting screws mounted on the frame at the other end thereof, adjusting nuts mounted on the frame and engaging the d ouble adjusting screws, means for locking the adjustable nuts against rotary movement, and means tor simultaneously rotating the double adjusting screws.

3. An oven truck including a frame, a single adjusting screw located at one end of the frame and provided with operating means, a rred nut mounted on the frame and engaging the single adjusting screw, double adjusting screws mounted. on the frame at the other end thereof, adjusting nuts mounted on the 'frame and engaging the double adjusting screws7 nieans for locling the adjustable nuts against rotary movement, gearing connecting the double adjusting screws for simultaneously rotation, and an operating device for rotating the double adjusting screws.

4. An oven truck comprising a frame, a single adjusting screw mounted on the frame centrally of one end thereof, double adjusting screws mounted. on the frame at opposite sides of the other end thereof, means for adjusting the double adjusting screws simultaneously and independently, and a tray carrying frame provided with central and side sockets receiving the single and double adjusting screws.

. 5. An oven truck comprising a frame, a single adjusting screw mounted on the frame centrally of one end thereof, double adjusting screws mounted on the Jframe at opposite sides of the other end thereof, means for adjusting the double adjustingscrews simultaneously and independently a tray carrying frame provided with central and side sockets receiving the single and double adjusting screws, side adjusting wheels located at the end oi the frame adjacent the double adjusting screws, and a centrally arranged castel' wheel supporting the 'frame below the single adjusting screw.

6, An oven truck including a truck frame, an adjustable superimposed'track carrying frame comprising rails, spaced connectingr bars arranged in pairs and central and side blocks secured between the connecting bars and provided with sockets, center and side adjusting screws mounted on the truck traine and arranged at opposite side of one ond of: the truck and at the center ot the other end thereof and fitting in the screws and means .for adjusting the screws.

7. An oven truck including a truck 'traine an adjustable superimposed track carrying trame comprising rails, spaced connecting liars arranged in pairs and central and side blocks secured between the connecting bars and provided with sockets. center and side adjusting screws mounted on the truck traine and fitting in the screws, and means for adjusting the screws independently and for also adjusting the side screws simultanc ously.

In witness whereof, I have hereunto affixed my signature.

GEORGE MUELLER. 

